package com.example.book.constant;

//可以吧这个静态常量改成枚举
public class Constants {
    //成功
    public static final int SUCCESS_CODE=200;
    //程序出错
    public static final int FATL_CODE=-2;
    //未登录
    public static final int UNFOGIN_CODE=-1;

    public static final String SESSION_USER_KEY="session_user-key";
}
